Photodecarboxylative addition of carboxylates to phthalimides: a concise access to biologically active 3-(alkyl and aryl)methylene-1H-isoindolin-1-ones
作者:Fadi Hatoum、Jana Engler、Christina Zelmer、Johannes Wißen、Cherie Ann Motti、Johann Lex、Michael Oelgemöller
DOI:10.1016/j.tetlet.2012.07.142
日期:2012.10
A series of 3-(alkyl and aryl)methyleneisoindolin-1-one derivatives were synthesized in a simple two-step procedure using a recently established photodecarboxylative addition of carboxylates to phthalimides as the key-step. Subsequent acid-catalyzed dehydration and deprotection furnished the desired target compounds with high E-selectivity. The reaction sequence was applied to the synthesis of the known bioactive phenylethylene derivative, AKS-186. Different analogues, including heteroatom-containing isosteres were also synthesized using this approach. (C) 2012 Elsevier Ltd. All rights reserved.